Collapsible lamp shade



May 20., 1930. M. s. CLAWSON 1,759,093

' GOLLAPSIBLE LAMP SHADE Filed Jan. 17, 1927 3 Sheets-Sheet l Afayroe 6.CZandsy May 20, 1930. c wso 1,759,093

COLLAPSIBLE LAMP SHADE Filed Jan. 17, 1927 3 Sheets-Sheet 2 A/aprae SCZa W50 May 20, 1930. M. s, CLAWSON 4 1,759,093

COLLAPSIBLE LAMP SHADE Filed Jan. 17, 1927 I 3 Sheets-Sheet 3 /%07706Clawsaj Patented May 20, 1930 PATENT OFFICE monnon s. cnawsoinor UPPERMoNrcLAIn, new Jensen loonnarsintn LAMr SHADE Application filed January17', 1927. Serial No. 161,579.

This invention relates to'lamp shades and has for its general :objecttheprovision of a lamp shade designed particularly for use in therapeuticwork and so constructed as to be collapsible and therefore convenient topack and carry when not in use. V

An important ob 'ect of the invention is :to

provide a lamp shade so constructed as to embody a pluralityof connectedpanels which will act to distribute light in a more efficient mannerthan can be accomplished by means of shades of the ordinary type, itbeing desirable to avoid concentration at too limited an area. 7 1 1Another object of the invention is to provide a collapsible lamp shadehaving novel means whereby it may be held in assembled or set upposition and easily clamped upon any ordinary or preferred electriclight socket without the necessity for employing any special tools oraltering the construction of the socket itself.

Another and more specific object is toprovide a" collapsible lamp shadeembodying a plurality of panels pivotally conneotedin a manner similarto the connection of the leaves of hinges by means of permanentlymounted 'pintles, the arrangement being such that the shade willcollapse into substantial- 1y flat condition when it is detached fromthe socket and the securing clamp removed, the provision of interfittingknuckles on the leaves leaving slots which will act to insureventilation and prevent excessive heating of the parts and thethrowingof heat, by reflection, onto the area illuminated by the lamp inconnection with which'the shade is used.

A further object is to provide a shade of this character in which one ofthe pifntles connecting the panels may be removable to permit collapsingin a difieernt manner.

An additional object of the invention is to provide a collapsiblelampshade of this character for the above or an analogous purpose whichwill be simple and-inexpensive to manu-facture, easy to set uporapplyand use, positive in action, eflicient and durable in service, anda general improvement in the art.

With the above and other objects and advantages in iew, the in entionprsterably itsbulb, I a l Figure :2 is a top plan view with parts 1consists in the arrangement and combination of parts anddetailed-structural features :to be hereinafter more fully described andclaimed, and illustrated the accompanying draw- 'ings in which: 7 r Y 1Figure 1 is a view partly in side elevation :and partly in verticalsection showing the shade applied to an incandescent lamp and broken:away and insection, v

Figure 3 is :a view showing the preferred form of shade removed andcollapsed into flat form, v

- Figure 4i an edge elevation thereof,

Figure 5is-a detailview showing onesform of clamp, l 1

Figure 6 is a similar view showing a modilied clamp, and

I Figure 7, is a plan view illustratinga modi- Referring moreparticularly to the drawings and especially Figures 1 to-6 the letter Adesignates an ordinary incandescent lamp socket and B designates thelamp (or bulb mounted therein inthe usual manner.

In carrying out the invention I provide a shadedesignated as a hole bythe letter C, which shade is formed of a plurality of paneis or sections10 which may be con- .7

workable than certain other materials. The 7 sections J10are allpreferably of the same shape and each is disclosed as substantiallytriangular or .trapezodi-al. Each section is provided at its smaller endwith a reduced extension 11 which is offset angularly with "respect tothe panel so thatwhen the shade is in assembled position and applied toa lamp socket as shown inFigune .1 these extensions 11 will extendvertically in parallel relation whereas the panels themselves will flareoutwardly and downwardly. The extensions 11 have their extremities bentoutwardly and downwardly to define hooks-12 which cooperatewith clampingmeans to be described for reflect ng s cur n 111 9 7. 2

socket A. The side edges of the sections or panels are formed withinterfitting knuckles 13, as is common in hinge structures, and pivotalconnection is effected by means of pintles 14 so that the shade may becollapsed into the condition shown in Figures 3 and 4;.

In the actual manufacture of the sections or panels, the formation ofhinge knuckles such as those disclosed leaves slots 15 which arenecessary for clearance and these slots will provide adequate means,when the shade is assembled and in use, for insuring ventilation so thatoverheating of the parts and reflection of heat onto the area 7 orobjects illuminated by the lamp will be avoided, or at least minimized.

For securing the shade upon the socket, use is made of a clamp which mayconveniently be either that shown in Figure 5 or that disclosed inFigure 6. In the first mentioned instance the clamp 16 is represented asbeing a split metal band of a resilient nature having apertured ears 17for the passage of a bolt 18 equipped with a nut 19. The clamp is ofsuch size as to engage outwardly of the extensions 11 and beneath thehooks 12 as clearly indicated. In the latter instance the clamp is shownas formed of two sections 20 pivoted at 21 and having terminal ears 22through which passes a bolt 23 carrying a nut 24. This modified form ofclamp is applied and used in the same manner as the first describedform.

In the use of the device, assuming that it is in collapsed orknocked-down condition as shown in Figures 3 and 4;, it is merelynecessary to unfold the superposed halves of the shade, (each consistingin the present instance of four panels, though there is no limitation asto the number) and arrange the device in frusto-pyramidal or conicalform. The preferred clamp is then expanded or opened up and slipped overor about the extensions 11 and beneath the hooks 12. The assembledextensions carrying the clamp are then slipped onto the socket A and thebolt 18 or 23, as the case may be, inserted through the ears of theclamp and the nut applied and tightened to obtain the necessary clampingaction.

In Figure 7 I have shown a modified form of the invention in which thepanels are connected by pintles 25 and 26 the former being permanent andupset at both ends and the latter being removable so that the shade maybe collapsed. Of course any desired number of the pintles may beremovable but one is probably sufficient.

In the use of this form of the device, assuming that it is inknocked-down or collapsed condition as shown in Figure 7 it is merelynecessary to pivot or swing the various sections by bringing the edgesof the two endmost sections together with the knuckles thereoninterfitting, subsequent to which the removable pintle 26 is insertedthrough these knuckles to provide the necessary connection. The clamp,regardless of which is used, is applied as explained above. In bothforms of the invention it will be seen that as the clamp engages withinthe hooks the shade cannot drop down with respect to the socket and lampbut will be positively maintained in the proper or operative position.The shade will of course act in substantially the same manner as anyother except that it has the advantages of insuring ventilation anddistributing the light, the latter feature being the result of havingthe plurality of flat panels or sections each-of which has its ownseparate reflecting action. To efiect removal and collapsing of eitherform of the shade, the reverse operation to that described is followedin an obvious manner. I

From the foregoing description and a study of the drawings it will beapparent that I have thus provided a simply constructed, inexpensive andhighly convenient shade which may be readily carried about from place toplace without danger of breaking and used wherever necessary. Thesefeatures recommend the device to physicians, surgeons or others engagedin therapeutic work. It is believed that the construction, operation andadvantages will be readily apparent to one skilled in the art withoutfurther explanation.

While I have shown and described the preferred embodiments of theinvention, it should be understood that the disclosure is merely for thepurposes of illustration as the right is reserved to make all suchchanges in the shape, size, number of parts and other mechanical detailsas will not depart from the spirit of the invention or the scope of theclaims hereunto appended.

Having thus described the invention, I claim:

1. A collapsible lampshade comprising a plurality of sections providedat one end with reduced extensions adapted to engage upon an electriclamp socket in embracing relation thereto, and means engageableexteriorly about said extensions for clamping the same rigidly andimmovably to the socket.

2. A lamp shade comprising a plurality of similar sections hingedlyconnected at their adjacent side edges whereby the shade may becollapsed into flat form when not innse with one half lying on the otherin face to face relation, and means for clamping the assembled sectionsupon an electric lamp socket.

3. A collapsible lamp shade comprising a plurality of similar panels ofsubstantially trapezoidal shape hingedly connected at their adjacentside edges, extensions formed on the panels at the smaller endsthereof and terminating in hooks, said extensions being adapted to beengaged in embracing relation upon an incandescent lamp socket, andmeans engaging exteriorly of the extensions and within said hooks forholding the shade rigidly upon the socket.

4. A lamp shade comprising a plurality of similar panels ofsubstantially trapezoidal shape hingedly connected at their side edges,extensions formed on the panels at the smaller ends thereof andterminating in hooks, said extensions being adapted to be engaged inembracing relation upon an incandescent lamp socket, and means engagingsaid hooks for holding the extensions upon the socket, comprising aclamp engaging within the hooks and extending outwardly about saidextensions,- the shade being collapsible with one half the sectionslying upon the other half with the inner surfaces of both halves face toface.

5. A collapsible lamp shade comprising a plurality of trapezoidal shapedsections hingedly connected at their adjacent side edges, one hingeconnection being removable whereby the shade may be flattened out whennot in use, extensions at the smaller ends of the sections, and meansengaging said extensions for clamping the same upon an incandescent lampsocket.

6. A lamp shade comprising a plurality of panels hingedly connected attheir side edges, and means connected with the panels at the upper endsthereof for clamping the shade upon an electric lamp socket, the shadebeing collapsible with one half the sections lying upon the other halfwith the inner surfaces of both halves face to face.

In testimony whereof I afiix my signature.

'MONROE S. CLAWSON.

